How Fastly (FSLY) Makes Money: A Visual Guide
Fastly (FSLY) generated $624.02M in revenue (TTM through Q4 2025) but reported a net loss of $121.68M. Its largest revenue source is Network Services (76.6% of revenue). Below is an interactive breakdown of how revenue flows through the income statement.
Fastly (FSLY) Income Statement Flow
Frequently asked questions
How does Fastly (FSLY) make money?
- Fastly (FSLY) primarily makes money through Network Services, which accounts for 76.6% of total revenue. For TTM through Q4 2025, Fastly generated $624.02M in total revenue with a net profit margin of -19.5%.
What is Fastly (FSLY) gross profit margin?
- Fastly (FSLY) reported a gross profit margin of 56.3% for TTM through Q4 2025, equivalent to $351.40M in gross profit. This means Fastly retains 56.3% of each revenue unit after direct costs of production.
What is Fastly (FSLY) operating profit margin?
- Fastly (FSLY) reported an operating profit margin of -19% for TTM through Q4 2025, equivalent to −$118.36M in operating profit. This reflects profitability after operating expenses such as R&D, sales, and administration, but before taxes and non-operating items.
What is Fastly (FSLY) net profit margin?
- Fastly (FSLY) reported a net profit margin of -19.5% for TTM through Q4 2025, equivalent to −$121.68M in net profit. This is the share of revenue that remains as profit after all expenses, taxes, and non-operating items.
How much does Fastly (FSLY) invest in R&D?
- Fastly (FSLY) invested $162.66M in research and development in TTM through Q4 2025 (26.1% of total revenue). R&D spending reflects investment in future products, services, and technologies.
How much does Fastly (FSLY) spend on capital expenditures?
- Fastly (FSLY) spent $33.40M on capital expenditures in TTM through Q4 2025 (5.4% of total revenue). Capital expenditures represent investments in physical assets such as property, equipment, and infrastructure.
What is Fastly (FSLY) free cash flow?
- Fastly (FSLY) generated $61.04M in free cash flow for TTM through Q4 2025 (9.8% of total revenue). Free cash flow is the cash remaining after capital expenditures and represents the company's ability to fund growth, pay dividends, or reduce debt.
Data & methodology
What is a Sankey diagram?
- A Sankey diagram shows how money flows through a company from revenue to net profit. The width of each flow represents its proportion.
How is the data calculated?
- We use the income statement from company filings. For TTM (Trailing Twelve Months), we use a pre-aggregated twelve-month view aligned with our latest four quarterly periods. Revenue flows to cost of revenue and gross profit, then to operating expenses (R&D, S&M, G&A) and operating profit.
When was this data last updated?
- Based on company filings through TTM through Q4 2025.
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